Askar 0.7X Full Frame Reducer for FRA400C Refractor - FRA400C-RED Seestar Smart Telescope 9-element lens design for excellent

9-element lens design for excellent light transmission

This is an iOptron 2" Dielectric Coated Mirror Star Diagonal

Celestron's Rowe-Ackermann Schmidt Astrograph (RASA) 36 cm is also an excellent choice for advanced astroimaging

9 Doublet APO OTA from William Optics is provided in Space Grey (TG) color finish

and back focus is easier to deal with

Askar 0.7X Full Frame Reducer for FRA400C Refractor - FRA400C-RED Seestar Smart Telescope 9-element lens design for excellentThis triplet reducer is specifically designed for the Askar FRA400C, and will reduce the overall focal length to 280mm and the focal ratio to f 3. 9. Adding the reducer to the FRA400C will still allow full frame imaging and the back focus is a standard 55mm. The shorter focal ratio (from f 5. 6 to f 3. 9) enables the telescope to achieve a wider field of view and faster exposure times, making it ideal for capturing large nebulae, star clusters, as